[PATCH] Update RPATH to make loading libjawt possible (was: Re: RPATHS in binaries) (original) (raw)

Andrew Hughes ahughes at redhat.com
Thu Aug 9 11:15:54 UTC 2012

----- Original Message -----

Hi Kumar,

On 07/23/2012 11:19 AM, Kumar Srinivasan wrote: > My suggestion is to see if System.loadLibrary can be used, this > will > bode well for the modularization effort. I discussed this with the folks at awt-dev and they would prefer to avoid loading as much as possible. They are strongly against always preloading libjawt.so.

For my 2c, I'm against it too. It doesn't seem the right fix.

> If this must be added to RPATH in which case, append this last > to > ensure we don't break anything.

Yes, the awt folks have asked me to use this approach. The attached patch updates the RPATH in the launchers to add the arch dir to RPATH.

I don't see an attachment :-(

Shouldn't it be a webrev anyway?

A couple of questions:

1. I am not sure if this problem exists on windows or on other operating systems and what sort of fixes are appropriate there. How do I deal with this?

Worry about it if someone reports issues there? :-D I guess some kind person at Oracle could build and test there...

2. This patch uses RPATH (and not RUNPATH). This makes it impossible to use LDLIBRARYPATH to override the linker path. I don't see any potential dangerous effects (pretty much all libraries in the have an RPATH), and I suspect it's even intentional (so JDK6 can exec JDK7 with an LDLIBRARYPATH set and things will continue working). Does OpenJDK support platforms with RUNPATH (-Wl,--enable-new-dtags) ? 3. I cant seem to get http://hg.openjdk.java.net/jdk8/build to build. It seems to be missing a number of fixes needed to build with newer versions of gcc and glibc. The patch applies to both jdk8/build and jdk7u/jdk7u-dev. I have only build with 7.

I built jdk8/build successfully just last week. What issues are you seeing?

You can always push to a different 8 tree which builds, I guess.

Thanks, Omair

-- Andrew :)

Free Java Software Engineer Red Hat, Inc. (http://www.redhat.com)

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